What does "power down" mean?

To switch off (something electrical).

Power down

Common synonyms include: cut power, deenergization process, deenergizations, deenergize, hibernate, kill the power.

verb

verb ·Rare ·Advanced level

Verb

1
To switch off (something electrical). ambitransitive
"Google Glass batteries power down after 45 minutes of continuous recording, making it unlikely anyone could capture an entire film."

"Google Glass batteries power down after 45 minutes of continuous recording, making it unlikely anyone could capture an entire film."